Pneumatic malting-drum.



PATENTED NOV. 21, 1905.

F. B. GIESLER. PNEUMATIC MALTING DRUM.

APPLIOATION FILED FEB. 10. 1902.

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PATENT'ED NOV. 21, 1905. F. B. GIESLER.

PNEUMATIC MALTING DRUM.

APPLICATION FILED FEB.10.1902.

z SHEBTF-SHEET 2.

UNITED STATES PATENT OFFICE;

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed February 10, 1902. Serial No. 93,297.

To ctZZ whom, it may concern.-

Be it known that I, FRANKLIN B. GIusLER, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Pneumatic Malting-Drums; and I do hereby declare that the following is a full, clear, and exact description thereof.

The improvements constituting my inven tion consist in certain peculiarities of construction and combination of parts hereinafter particularly set forth with reference to the accompanying drawings and subsequently claimed, the object of said invention being to enhance the efficiency of rotatory pneumatic inalting-drums.

Figure 1 of the drawings represents a central longitudinal section view of a rotatory pneumatic malting-drum made to embody the improvements constituting my invention. Fig. 2 represents adetail partly-sectional view of a portion of a spraying apparatus in connection with the drum; Fig. 3, a sectional view indicated by line 8 8 in Fig. 2; Fig. 4, a sectional view of another portion of the spraying apparatus, and Fig 5 a similar View indicated by line 10 10 in Fig. 4.

Referring by letter to the drawings, A indicates the main or material holding portion of a pneumatic malting-drum embodying improvements in accordance with my invention, this drum being provided with outer trackrings 6 in contact with flanged wheels d, the axles of which turn in suitably-arranged bearings. A spur-gear ring 6 on the drum meshes with a pinion f on a shaft 9, carrying a spur-wheel it, in mesh with a pinion 2' on a shaft j, having a worm-wheel k fast thereon in mesh with a worm-sleeve m, loose on a main shaft B, but engageableat one end with a clutch C, splined on the same shaft. A lever-controlled rod D, mounted in suitablyarranged bearings, has spanner connection with an annular groove of the clutch, and by manipulation of the lever said clutch is thrown in and out of engagement with the wormsleeve, the drum being in motion or at rest, according to the adjustment of the aforesaid clutch.

The drum is provided with the usual and necessary openings that are normally closed, and by means of partitions p q therein, parallel to its heads, said drum is provided with front and rear end chambers. Connected at their ends to the partitions to register with" corresponding openings therein are the usual perforated air-flues G at suitable intervals apart. The centralair-flue H, of perforated material, is of greater area than the other flues G and is preferably the same in cross-section as has been set forth in Patent No. 507,536, issued to me October 31, 1893, its front end being closed by one of the aforesaid partitions and its rear end open through the other partition and adjacent drum-head, to an arm of an air-exhaust flue J, that is connected ,to a suction-fan casing or a draft-stack, an annular shield o being arranged in the rear end chamber of the drum to prevent direct flow of air through flues G to said exhaust-flue. In some instances it may be preferable to omit the rear partition q of the drum and have the rear ends of air-flues Gr closed by the rear drumhead or hand hole covers thereon.

A central opening in the front drumhead registers with an arm of an air-supply flue I, the open end of this arm and that of the arm of air-exhaust flue J being flared and opposed to a flanged ring K, fast to the adjacent drumhead. A gaskets, of rubber, leather, or other suitable material, is fastened on the flare of each flue-arm to impinge the flange t of the adjacent ring K to prevent escape of air between said flue-arm and ring, provision being had in the setting of the gaskets to compensate for settle of the drum incidental to wear of various parts of the machinery.

The front ends of air-flues G are fitted in castings L, having flanges riveted or otherwise rigid with the front partition p of the drum, and in pivotal connection with each casting-flange is a gate M, by which the airsupply through the adjacentflue is regulated, the movement of the air being upward through the material in the drum and out through the central flue H of same.

The usual perforated pipes Q, lengthwise of flue H exteriorly of the same, have inturned converging branches fitted to a coupling R, having a screw-shank y, Fig. 2, engaging an opening provided in drum-partition p, a setnut .2 being run on the shank to hold said coupling in place. The coupling has a conical bore in which a hollow conical spigot S has loose lit to save wear, this spigot being provided with a large water-outlet and a series of radial steam-ports, these ports being the same in number and spacing as the aforesaid pipe branches fitted to said coupling, all of which is best shown in Fig. 3.

The rear end of the spigot S is closed and -a front end nipple of said spigot is in screwthread connection with an end of a horizontal stretch of a stationary water-conductor pipe T, the vertical stretch of which extends through a fitting on the aforesaid arm of airsupply flue I, a cock-controlled steam-pipe U being coupled to the water-conductor pipe above said fitting.

In water-tight connection with coupling R is a sleeve V, having a stuffing-box engaged by the horizontal stretch of pipeTin connection with spigot S, and this stretch of pipe is provided with a leak-port b, Fig. 2, through which water supplied under constant pressure escapes into said sleeve to exert pressure on said spigot. The vertical stretch of pipe T is provided with a cock WV, by which the feed of water from an elevated reservoir (not shown) is controlled, and below this cock said pipe is interrupted by a casing X of a conical hollow spigot Y, provided with graduated inlets and a single outlet, this outlet being of such length as to be always open regardless of the rotary adjustment of said spigot. As best shown in Fig. 4, the small end of spigot Y is provided with a screw-shank 0', that extends through a central opening in an otherwise-closed end of the casing X, and a setnut cl is run on said shank to hold said spigot in adjusted position. The other end of casing X is open, and the corresponding large end of the spigot Y is provided with an angular central lug a to facilitate itsadjustment by means of a wrench when the set-nut d is loosened.

Spigot Y is adjusted to regulate the flow of water from the elevated reservoir, (not shown,) and incidental to the How the waterpressure in the sleeve V on spigot S is suflicient to crowd the same water-tight in coupling R, there being suflicient elasticity in pipe T to permit this crowding, it being understood that this coupling and sleeve V in connection therewith turn with the drum. The water is admitted in quantity to each pipe Q while the inturned branch thereof is passing the water-outlet of said spigot between two of the steam-ports. The water under con stant pressure is only admitted to the sprinkling system at such times, as the moisture with the air is not sufficient for the germinating process that takes place in the drum, said Water being properly attcmperated.

The drum being at rest with the steamports of spigot S in register with the converging front-end branches of pipes Q, said drum may be readily steamed through the sprinkling system preliminary to washing out of the same when emptied of the green malt produced therein.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A rotatory malting-drum having a coupling connecting its sprinkling-pipes, a closedend hollow conical spigot loose in the coupling and provided with awater-outlet, a waterconductor pipe coupled to the spigot, asleeve having water-tight connection with said coupling, a stufling-box in the sleeve engaged by the water-conductor pipe, the latter being provided with a leak-port within said sleeve, and means for circulating air in thedrum.

2. A rotatory malting-drum having a-coupling connecting its sprinkling-pipes, a closedend hollow conical spigot loose in the coupling and provided with a water-outlet as well as a series of steam ports the latter corresponding in number and spacing to the ends of the sprinkling-pipes in connection with said coupling, a water-conductor pipe coupled to the spigot, a sleeve having water-tight connection with the aforesaid coupling, a stuffing-box in the sleeve engaged by the waterconductor pipe, the latter being provided with a leak-port within said sleeve, a cock-controlled steain-pipe coupled to said water-conductor pipe, and means for circulating air in the drum.

3. A rotatory malting-drum having a coupling connecting its sprinkling-pipes, ahollow spigotterminal of a stationary water -conductor pipe engaging the coupling, the spigot being provided with a series of ports in addition to a larger outlet, these ports being the same in number and spacing as the coupling ends of said sprinklingpipes, a cock-controlled steam-pi pe coupled to the former pipe, and means for circulating air in the drum.

4. A rotatory malting-drum having a coupling connecting the sprinkling-pipes, a closedend hollow conical spigot that serves as a bearing for the coupling and is provided with a water-outlet, a water-conductor pipe coupled to the spigot, means for regulating flow of water through said conductor, and means for circulating air in the drum.

5. A rotatory malting-drum having a coupling connecting its sprinkling-pipes, a closedend hollow conical spigot that serves as a bearing for the coupling, and is provided with a water-outlet, a water-conductor pipe coupled to the spigot, a casing in connection with said conductor, a hollow conical spigot that is rotatably adjustable in the casing, this spigot being provided with a series of graduated inlets and a single outlet, said outlet being of such length as to be always open regardless of the adj ustmentof said spigot, and means for circulating air in the drum.

In testimony that I claim the foregoing I have'hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of Nisconsin, in the presence of two witnesses.

FRANKLIN GIESLER.

WVitnesses:

N. E. OLIPHANT, B. O. ROLOFF. 

